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git.proxmox.com Git - mirror_frr.git/blob - zebra/zebra_mpls_netlink.c
1 /* MPLS forwarding table updates using netlink over GNU/Linux system.
2 * Copyright (C) 2016 Cumulus Networks, Inc.
4 * This file is part of Quagga.
6 * Quagga is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * Quagga is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; see the file COPYING; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "zebra/debug.h"
27 #include "zebra/rt_netlink.h"
28 #include "zebra/zebra_mpls.h"
29 #include "zebra/kernel_netlink.h"
31 static ssize_t
netlink_lsp_msg_encoder(struct zebra_dplane_ctx
*ctx
, void *buf
,
36 /* Call to netlink layer based on type of update */
37 if (dplane_ctx_get_op(ctx
) == DPLANE_OP_LSP_DELETE
) {
39 } else if (dplane_ctx_get_op(ctx
) == DPLANE_OP_LSP_INSTALL
||
40 dplane_ctx_get_op(ctx
) == DPLANE_OP_LSP_UPDATE
) {
43 if (dplane_ctx_get_best_nhlfe(ctx
) == NULL
) {
44 if (IS_ZEBRA_DEBUG_KERNEL
|| IS_ZEBRA_DEBUG_MPLS
)
45 zlog_debug("LSP in-label %u: update fails, no best NHLFE",
46 dplane_ctx_get_in_label(ctx
));
55 return netlink_mpls_multipath_msg_encode(cmd
, ctx
, buf
, buflen
);
58 enum netlink_msg_status
netlink_put_lsp_update_msg(struct nl_batch
*bth
,
59 struct zebra_dplane_ctx
*ctx
)
61 return netlink_batch_add_msg(bth
, ctx
, netlink_lsp_msg_encoder
, false);
65 * Pseudowire update api - not supported by netlink as of 12/18,
66 * but note that the default has been to report 'success' for pw updates
67 * on unsupported platforms.
69 enum netlink_msg_status
netlink_put_pw_update_msg(struct nl_batch
*bth
,
70 struct zebra_dplane_ctx
*ctx
)
72 return FRR_NETLINK_SUCCESS
;
75 int mpls_kernel_init(void)
80 * Check if the MPLS module is loaded in the kernel.
82 if (stat("/proc/sys/net/mpls", &st
) != 0)
88 #endif /* HAVE_NETLINK */